class Sum { 
	    int n;
	    float f() { 
		float sum=0;
		for(int i=1;i<=n;i++)
			sum=sum+i;
		return sum;  
	    }
}
class Average extends Sum {
	int n;  
	float f() { 
		float c;
		super.n=n;
		c=super.f();
		return c/n; 
	}
	float g() {
		float c;
		super.n=n;
		c=super.f();
		return c/2; 
	}
}
public class Example5_7 {
	public static void main(String args[]) {
		Average aver=new Average();
		aver.n=100;
		float resultTwo=aver.g(); 
		float resultOne=aver.f();
		System.out.println("resultOne="+resultOne);
		System.out.println("resultTwo="+resultTwo);
	}
}
